Pathogenicity and reproduction of Meloidogyne incognita on susceptible almond trees in Southern Italy (Abstract in rivista)

Type
Label
  • Pathogenicity and reproduction of Meloidogyne incognita on susceptible almond trees in Southern Italy (Abstract in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Rosso L., De Candia A., Leonetti P., Ciancio A. (2003)
    Pathogenicity and reproduction of Meloidogyne incognita on susceptible almond trees in Southern Italy
    (literal)
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  • Rosso L., De Candia A., Leonetti P., Ciancio A. (literal)
Pagina inizio
  • 118 (literal)
Pagina fine
  • 118 (literal)
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  • 33 (literal)
Rivista
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  • 1 (literal)
Note
  • Abstract (literal)
  • ISI Web of Science (WOS) (literal)
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  • CNR Istituto per la Protezione delle Piante, Bari (literal)
Titolo
  • Pathogenicity and reproduction of Meloidogyne incognita on susceptible almond trees in Southern Italy (literal)
Abstract
  • Severe root damage induced by a population of M. incognita was observed in southern Sicily in a naturally infested almond orchard. The nematode attack was favoured by the susceptibility of the rootstock seedlings used at transplanting. Three years after planting the trees mortality induced by parasitism was higher than 60%. Tree production was lower either in quantity and quality of almonds, with crop losses in the range of 50-70% of nuts. Several large galls were visible on principal and lateral roots, inducing a severe reduction of the radical system functionality. The galls resulted form hyperplasic tissues, giant cells and large female numbers causing asymmetrical root growth. Giant cells were observed into the vascular cylinder. They were characterized by dense cytoplasm, hypertrophy, heterochromatic nuclei, and thicker walls. The feeding sites caused interruptions, reductions and alterations in the continuity of the vascular tissues. The nematodes completed their life cycle forming egg masses frequently embedded within the root tissues. Population dynamics of M. incognita was favoured by mid winter temperatures and soil texture, and juvenile densities reached in mid summer 60 x 10^3 specimens / litre of soil. Trees infection was enhanced by the presence of M. incognita susceptible weeds. (literal)
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